Instructions to upgrade:

  1. Log into chat.openai.com
  2. Click on "Upgrade plan" on the left slide menu
  3. "Your account" popup appears with an option to upgrade to a "Professional Plan" for $42/mo, or stay on the "Free Plan"

Free Plan benefits:

  - Available when demand is low
  - Standard response speed
  - Regular model updates

Professional Plan benefits:

  - Available even when demand is high
  - Faster response speed
  - Priority access to new features